243010213 has 4 divisors (see below), whose sum is σ = 243604780. Its totient is φ = 242415648.

The previous prime is 243010199. The next prime is 243010219. The reversal of 243010213 is 312010342.

It is a happy number.

243010213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 188870049 + 54140164 = 13743^2 + 7358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243010213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243010219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296670 + ... + 297487.

It is an arithmetic number, because the mean of its divisors is an integer number (60901195).

Almost surely, 2^243010213 is an apocalyptic number.

It is an amenable number.

243010213 is a deficient number, since it is larger than the sum of its proper divisors (594567).

243010213 is an equidigital number, since it uses as much as digits as its factorization.

243010213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594566.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 243010213 is about 15588.7848468057. The cubic root of 243010213 is about 624.0338891372.

Adding to 243010213 its reverse (312010342), we get a palindrome (555020555).

The spelling of 243010213 in words is "two hundred forty-three million, ten thousand, two hundred thirteen".